php: debugger, profiler and more
DESCRIPTION
Slide introduce about the process of debugging and profling a web application. How to use PHPED debugger to debug your application and Xdebug to profile your application.TRANSCRIPT
$Table_of_contents
IDEs for Web Developer
Debugging
Profiling
Load Testing
Tài trợ:
Learn about IDE.
IDEs for Web Developer1
1.1. What is an IDE?
Integrated Development Environment
Application for software development
Common Features: Syntax highlight Autocomplete File Explorer Collapse/Expand
1.2. Common IDEs for Web Developer
Notepad, Notepad++ Adobe Dreamweaver Aptana Komodo PhpEd Zend Studio PHP Designer …
1.3. Recommend Features for PHP IDE
Built-in parser
Documentor
Debugger
DB Client
Text Format
1.4. Small Quizz
What is the difference between 2 screenshots?
IDE for PHP, support HTML, CSS Paid Software, current version: 5.9 Main Features:
Debugger Autocomplete DB Client Documentor Code Explorer Exclude folders, files in project.
1.5. NuSphere PhpEd Introduction
1.6. NuSphere PhpEd screenshot
Learn how to use PhpEd Debugger to debug your web applications.
Debugging2
What is debug?
Find errors in your code.
How to debug?
Output with HTML: echo(), print_r(), var_dump()
Store debug information: File, Database
Live debug: PhpEd Debugger
2.1. Debug Introduction
Integrate with Firefox (DBGbar addon)
Step debugging
Multi breakpoint
Watch runtime variables
Watch call stack
Remote debugging
2.2. PhpEd Debugger features
2.3. PhpEd Debugger Installation
Step 1: Install php extension
Step 2: Install DBGbar addon for Firefox
Step 3: Update PHP.INI config
Restart your web server (if needed)
Step 1: Install PHP Extension
Go to ‘C:\..\nusphere\phped\debugger\server\’ Select correct library for your platform and PHP version Copy file (.dll on Windows) to php extension folder
Step 2: Install DBGbar addon
In Firefox, go to menu Tools >> Add-ons Search ‘DBGbar’ and install. Restart Firefox, you will get DBGbar toolbar:
Step 3: Update PHP.INI config
Add dbg extension to extension list: extension=dbg-php-5.2.dll
Add configuration for debugger [debugger] debugger.enabled=on debugger.profiler_enabled=on debugger.hosts_allow=localhost apple.comdebugger.hosts_deny=ALL debugger.ports=7869, 10000/16
2.4. PhpEd Debugger usage
2.5. DEMO Debugging
Learn how to use Xdebug extension to find bottleneck and increase performance for your web applications.
Profiling3
3.1. Profiling Introduction
Find bottleneck Make application run faste
3.2. Two ways of profiling
Built-in profiler 3rd-party profiler
3.2.1. Built-in profiler
Tracking code embed in your PHP code Example: Using timer start & stop
3.2.1. Built-in profiler…cont.
3.2.2. 3rd-party profiler
Install new extension Do not change your PHP code More Information Famous Library: Xdebug
3.3. Xdebug Installation
Step 1: Install php extension
Step 2: Update PHP.INI config
Restart your server (if needed)
Step 1: Install php extension
Download correct extension for your platform & PHP version
Can go to ‘http://www.xdebug.org/find-binary.php’ to find correct Xdebug file for your system from phpinfo() output
Copy file (.dll on Windows) to php extension folder
Step 2: Update PHP.INI config
Add configuration for xdebug:[xdebug]zend_extension_ts = C:\AppServ\php5\ext\php_xdebug-2.1.0-5.2-vc6.dll
xdebug.profiler_output_dir = "C:\xdebug"xdebug.profiler_output_name = "callgrind.%R.%t"xdebug.profiler_enable = 0xdebug.profiler_append=0xdebug.profiler_enable_trigger = 1xdebug.extended_info=1
3.4. Xdebug Usage
Step 1: Generate cachegrind file Base on xdebug config in PHP.INI to create
cachegrind file.
For above php.ini config: Add parameter XDEBUG_PROFILE to your request string will create cachegrind file. Examp;e: Normal : http://bloghoctap.com Profiler: http://bloghoctap.com?XDEBUG_PROFILE
2.4. Xdebug Usage…
Step 2: View & analyze your profile result: WinCacheGrind Kcachegrind
2.4.1. WinCacheGrind Viewer
2.4.2. Kcachegrind Viewer
3.5. DEMO Profiling
Benchmark your web application.
Load Testing4
4.1. ApacheBench
4.2. Apache jMeter
It’s time to query …
Thanks you!